Oil-feeding device for vapor-stoves



(No Model.)

O. M. HOLLINGSWORTH. OIL FEEDING DEVICE FOR VAPOR STOVES. No. 448,236.

Patented Mar. 17,1891.

. IIZIIIIIIII:

TN SS S- ZLMM 7173M NHED STATES PATENT OFFICE.

CHARLES M. HOLLINGSVORTH, OF CLEVELAND, OHIO.

OIL-FEEDING DEVICE FOR VAPOR-STOVES.

SPECIFICATION forming part of Letters Patent No. 448,236, dated March17, 1891.

Application filed July 14, 1890. Serial No. 358,641. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES M. HOLLINGS- WORTH, a citizen of the UnitedStates, residing at Cleveland, in the county of Cuyahoga and State ofOhio,have invented certain new and useful Improvements inOil-FeedingDevices for Vapor-Stoves, of which the follwing is a full,clear, and exact description,reference being had to the accompanyingdrawings, in which-- Figure 1 is a front elevation of a vaporstovehaving two burners, and Fig. 2is an enlarged vertical sectional view onthe line 2 2.

My invention relates to carhureting vaporstoves in which the constancyand regularity of the burnenflame is dependent upon the regularityin therate at which the liquid hydrocarbon is fed to the carburetor, and it isparticularly adapted to and is shown in the drawings in connection withthat form of vapor-stove which contains in its construction the sort ofgravity-carburetor which is shown in Letters Patent No. 421,834, grantedto me February 1 1890.

My invention is in the nature of an improvement on the oil-feedingdevice described and shown in an application for a patent executed July10, 1890. In that device means are provided by which a user can regulatethe size of the final outlet of the carburetor and other means whereby asuitable pressure of the liquid at the final outlet can be maintained,which pressure is not dependent upon the quantity or height of theliquid in the main reservoir, the result of the combined mechanism beinga regular" feed to the carburetor and a consequent constant flame of anydesired size at the burner; but it is de-' sirable that vapor-stovesshould be so iconstrueted that their success should depend as little aspossible on the care and attention of the user; and the objects of myinvention are to simplify and cheapen the oil-feeding device, andespecially to provide means for antomatically preserving a constantpressure of the liquid at the final outlet to the carburetor, wherebythe regulation and control of the burner-flame shall be a matterrequiring only slight care.

To these ends my invention consists in the construction and combinationof parts herein shown and described, and pointed out definitely in theclaim.

Referring to the drawings, L represents a suitable tank or mainreservoir, which con tains the supply of liquid hydrocarbon to bevaporized, which reservoir will preferably be made of sheet metal and ofcylindrical form. Below the main reservoir is a supplemental reservoir2, which in the form shown in the drawings is formed directly beneaththe main reservoir by means of the partition 3. There is an orificethrough this partition, over which is soldered a small casting 4, whichhas a central orifice through which the liquid passes by gravity to thesupplemental reservoir.

This orifice is provided with a tapered valveseat, against which a valve5 is seated, as hereinafter explained, thus closing the orifice. Overthe casting 1 is fastened a piece of wiregauze 6, which prevents foreignparticles from lodging in and obstructing said orifice. A small tube 7extends from the partition 3 to the upper end of the tank 1 and connectsthe supplemental reservoir 2 with the outer air, and thus affords meansforpreservingatmospheric pressure on the liquid in said supplementalreservoir.

To the lower wall of the supplemental reservoir is secured a casting 8,having an orifice through which the liquid flows by gravity from saidsupplemental reservoir toward the final outlet, through which it passestothe carburetor.

As many carburetors 9 may be employed as are desired, two being shown inthe drawings, each feeding a separate burner 10.

The casting 8 connects with a branch pipe 11, and as many nozzles 12branch from this pipe as there are carburetors. Each nozzle contains afinal outlet from the oil-feeding device, and each is opened and closedby a suitable valve 13.

In order to intelligently regulate the size of the flame at the burner,it is necessary to have means for regulating the size of the finaloutlet and other means not dependent upon the quantity of liquid, in themain reservoir for maintaining a suitable pressure at the final tiallyconstant pressure by providing means whereby the liquid shall be fedfrom the main reservoir to the supplemental reservoir until a certainheight of liquid in said supplemental reservoir is secured, after whichthe said height shall be automatically maintain ed. To secure this lastresult I provide a float 14, located in the supplemental reservoir,which carries a valve adapted to close the orifice leading from the'main to the supplemental reservoir, and the parts are so arranged thatwhen the proper amount of liquid is in the supplemental reservoir thefloat carries the valve to its seat and prevents any immediate furtherentry of the liquid to said supplemental reservoir so long as the finaloutlet remains closed. \Vhen this final outlet is opened, the float isslightly lowered and the liquid is permitted to flow into saidsupplemental reservoir at substantially the same rate at which it. flowsout through the final outlet, thus automatically maintaining a constantlevel and pressure. The float 14 is made of two pieces of thin sheetmetal securely fastened together at their ends, thereby forming aplane-convex circular disk. A tube 15 passes centrally through thefloat, being soldered thereto at both ends, and one 'end of said tubeprojects below the float. The valve-rod 5 passes through this tube and ahorizontal pin 16, passing through the rod and the part of the tubewhich extends below the float pivotally secures said rod to the float.By reason of this pivotal connection of the valve-rod to the float thevalve-rod will always be seated against the valve-seat in the casting 4when the float rises, whether the tank L be set vertically or not. Therod projects at both ends from the float, the lower end extending intothe orifice in the casting 8, while. the upper end extends into theorifice in the casting 4. These ends of the valve-rod are so long thatthey do not come but of the orifice in either of the two castings at anytime, whether the supplemental chamber is full or empty. Therefore thereis comparatively little danger of breakage during shipment, and thevalve is sure to seat itself when carried up sufliciently by the float.WVhen the liquid does flow from the main to the supplemental reservoir,it runs down the valvestem through the tube 16 and is delivered into theliquid in said reservoir without any opportunity to find a lodgment onthe top of the float. The buoyancy of the float will therefore beconstant and its action regular, whereby a uniform level of the liquidis maintained in the supplemental reservoir.

In preparing these stoves for the market an index-finger 17 is usuallyplaced upon the stem of each valve which controls a final outlet, andthese fingers are so adjusted that when the valve is turned to a pointwhere this index-finger occupies a certain position a vertical position,for eXample-.a full normal feed to the burner is secured. Thus theproper working of the device is made almost wholly independent of anycare or skill on the part of the user.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In an oil-feeding device for vapor-stoves, a tank having a partitionwhich divides said tank into a main reservoir and a su pplementalreservoir located below the main reservoir, a casting secured to saidpartition and having a duct through which the liquid flows by gravitvfrom the main to the supplemental reservoir, a wire-gauze secured tosaid partition above the entrance to said duct and adapted to preventthe entry of foreign partieles thereto, and a casting secured to thelower wall of the supplemental reservoir, having an orifice throughwhich the liquid flows, combined with a float-valve in said supplementalreservoir having a tube passing centrally through it and projectingbelow it, a valve-rod passing through said tube and pivotally connectedwith the part thereof which eX- tends below said float, said valve-rodbeing extended at its lower end into the orifice in the lower castingand at its upper end into the duct in the upper casting and having aconical upper end adapted to engage with a conical valveseat formed inthe upper casting, substantia ly as and for the purpose specified.

CHARLES M. HOLLINGSWORTH.

\Vitnesses:

E. L. THURSTON, ALBERT H. BATES.

